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| Src | Date (GMT) | Titre | Description | Tags | Stories | Notes |
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2024-06-12 14:00:00 | Aperçu sur les cyber-menaces ciblant les utilisateurs et les entreprises au Brésil Insights on Cyber Threats Targeting Users and Enterprises in Brazil (lien direct) |
Written by: Kristen Dennesen, Luke McNamara, Dmitrij Lenz, Adam Weidemann, Aline Bueno
Individuals and organizations in Brazil face a unique cyber threat landscape because it is a complex interplay of global and local threats, posing significant risks to individuals, organizations, and critical sectors of Brazilian society. Many of the cyber espionage threat actors that are prolific in campaigns across the globe are also active in carrying out attempted intrusions into critical sectors of Brazilian society. Brazil also faces threats posed by the worldwide increase in multifaceted extortion, as ransomware and data theft continue to rise. At the same time, the threat landscape in Brazil is shaped by a domestic cybercriminal market, where threat actors coordinate to carry out account takeovers, conduct carding and fraud, deploy banking malware and facilitate other cyber threats targeting Brazilians. The rise of the Global South, with Brazil at the forefront, marks a significant shift in the geopolitical landscape; one that extends into the cyber realm. As Brazil\'s influence grows, so does its digital footprint, making it an increasingly attractive target for cyber threats originating from both global and domestic actors. This blog post brings together Google\'s collective understanding of the Brazilian threat landscape, combining insights from Google\'s Threat Analysis Group (TAG) and Mandiant\'s frontline intelligence. As Brazil\'s economic and geopolitical role in global affairs continues to rise, threat actors from an array of motivations will further seek opportunities to exploit the digital infrastructure that Brazilians rely upon across all aspects of society. By sharing our global perspective, we hope to enable greater resiliency in mitigating these threats. Google uses the results of our research to improve the safety and security of our products, making them secure by default. Chrome OS has built-in and proactive security to protect from ransomware, and there have been no reported ransomware attacks ever on any business, education, or consumer Chrome OS device. Google security teams continuously monitor for new threat activity, and all identified websites and domains are added to Safe Browsing to protect users from further exploitation. We deploy and constantly update Android detections to protect users\' devices and prevent malicious actors from publishing malware to the Google Play Store. We send targeted Gmail and Workspace users government-backed attacker alerts, notifying them of the activity and encouraging potential targets to enable Enhanced Safe Browsing for Chrome and ensure that all devices are updated. Cyber Espionage Operations Targeting Brazil Brazil\'s status as a globally influential power and the largest economy in South America have drawn attention from c |
Ransomware Spam Malware Tool Vulnerability Threat Mobile Medical Cloud Technical | APT 28 | ★★ |
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2024-06-05 14:00:00 | Phishing pour l'or: cyber-menaces auxquelles sont confrontés les Jeux olympiques de Paris 2024 Phishing for Gold: Cyber Threats Facing the 2024 Paris Olympics (lien direct) |
Written by: Michelle Cantos, Jamie Collier
Executive Summary Mandiant assesses with high confidence that the Paris Olympics faces an elevated risk of cyber threat activity, including cyber espionage, disruptive and destructive operations, financially-motivated activity, hacktivism, and information operations. Olympics-related cyber threats could realistically impact various targets including event organizers and sponsors, ticketing systems, Paris infrastructure, and athletes and spectators traveling to the event. Mandiant assesses with high confidence that Russian threat groups pose the highest risk to the Olympics. While China, Iran, and North Korea state sponsored actors also pose a moderate to low risk. To reduce the risk of cyber threats associated with the Paris Olympics, organizations should update their threat profiles, conduct security awareness training, and consider travel-related cyber risks. The security community is better prepared for the cyber threats facing the Paris Olympics than it has been for previous Games, thanks to the insights gained from past events. While some entities may face unfamiliar state-sponsored threats, many of the cybercriminal threats will be familiar. While the technical disruption caused by hacktivism and information operations is often temporary, these operations can have an outsized impact during high-profile events with a global audience. Introduction The 2024 Summer Olympics taking place in Paris, France between July and August creates opportunities for a range of cyber threat actors to pursue profit, notoriety, and intelligence. For organizations involved in the event, understanding relevant threats is key to developing a resilient security posture. Defenders should prepare against a variety of threats that will likely be interested in targeting the Games for different reasons: Cyber espionage groups are likely to target the 2024 Olympics for information gathering purposes, due to the volume of government officials and senior decision makers attending. Disruptive and destructive operations could potentially target the Games to cause negative psychological effects and reputational damage. This type of activity could take the form of website defacements, distributed denial of service (DDoS) attacks, the deployment of wiper malware, and operational technology (OT) targeting. As a high profile, large-scale sporting event with a global audience, the Olympics represents an ideal stage for such operations given that the impact of any disruption would be significantly magnified. Information operations will likely leverage interest in the Olympics to spread narratives and disinformation to target audiences. In some cases, threat actors may leverage disruptive and destructive attacks to amplify the spread of particular narratives in hybrid operations. Financially-motivated actors are likely to target the Olympics in v |
Ransomware Malware Threat Studies Mobile Cloud Technical | APT 15 APT 31 APT 42 | ★★ |
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2024-04-17 10:00:00 | Unearthing APT44: Russia\'s Notorious Cyber Sabotage Unit Sandworm (lien direct) | Written by: Gabby Roncone, Dan Black, John Wolfram, Tyler McLellan, Nick Simonian, Ryan Hall, Anton Prokopenkov, Luke Jenkins, Dan Perez, Lexie Aytes, Alden Wahlstrom
With Russia\'s full-scale invasion in its third year, Sandworm (aka FROZENBARENTS) remains a formidable threat to Ukraine. The group\'s operations in support of Moscow\'s war aims have proven tactically and operationally adaptable, and as of today, appear to be better integrated with the activities of Russia\'s conventional forces than in any other previous phase of the conflict. To date, no other Russian government-backed cyber group has played a more central role in shaping and supporting Russia\'s military campaign. Yet the threat posed by Sandworm is far from limited to Ukraine. Mandiant continues to see operations from the group that are global in scope in key political, military, and economic hotspots for Russia. Additionally, with a record number of people participating in national elections in 2024, Sandworm\'s history of attempting to interfere in democratic processes further elevates the severity of the threat the group may pose in the near-term. Given the active and diffuse nature of the threat posed by Sandworm globally, Mandiant has decided to graduate the group into a named Advanced Persistent Threat: APT44. As part of this process, we are releasing a report, “APT44: Unearthing Sandworm”, that provides additional insights into the group\'s new operations, retrospective insights, and context on how the group is adjusting to support Moscow\'s war aims. Key Findings Sponsored by Russian military intelligence, APT44 is a dynamic and operationally mature threat actor that is actively engaged in the full spectrum of espionage, attack, and influence operations. While most state-backed threat groups tend to specialize in a specific mission such as collecting intelligence, sabotaging networks, or conducting information operations, APT44 stands apart in how it has honed each of these capabilities and sought to integrate them into a unified playbook over time. Each of these respective components, and APT44\'s efforts to blend them for combined effect, are foundational to Russia\'s guiding “information confrontation” concept for cyber warfare. 
Figure 1: APT44\'s spectrum of operations
APT44 has aggressively pursued a multi- |
Malware Tool Threat Mobile Cloud | NotPetya | ★★ |
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2024-04-04 14:00:00 | Cutting avant, partie 4: Ivanti Connect Secure VPN Post-Exploitation Mouvement latéral Études de cas Cutting Edge, Part 4: Ivanti Connect Secure VPN Post-Exploitation Lateral Movement Case Studies (lien direct) |
Written by: Matt Lin, Austin Larsen, John Wolfram, Ashley Pearson, Josh Murchie, Lukasz Lamparski, Joseph Pisano, Ryan Hall, Ron Craft, Shawn Chew, Billy Wong, Tyler McLellan
Since the initial disclosure of CVE-2023-46805 and CVE-2024-21887 on Jan. 10, 2024, Mandiant has conducted multiple incident response engagements across a range of industry verticals and geographic regions. Mandiant\'s previous blog post, Cutting Edge, Part 3: Investigating Ivanti Connect Secure VPN Exploitation and Persistence Attempts, details zero-day exploitation of CVE-2024-21893 and CVE-2024-21887 by a suspected China-nexus espionage actor that Mandiant tracks as UNC5325. This blog post, as well as our previous reports detailing Ivanti exploitation, help to underscore the different types of activity that Mandiant has observed on vulnerable Ivanti Connect Secure appliances that were unpatched or did not have the appropriate mitigation applied. Mandiant has observed different types of post-exploitation activity across our incident response engagements, including lateral movement supported by the deployment of open-source tooling and custom malware families. In addition, we\'ve seen these suspected China-nexus actors evolve their understanding of Ivanti Connect Secure by abusing appliance-specific functionality to achieve their objectives. As of April 3, 2024, a patch is readily available for every supported version of Ivanti Connect Secure affected by the vulnerabilities. We recommend that customers follow Ivanti\'s latest patching guidance and instructions to prevent further exploitation activity. In addition, Ivanti released a new enhanced external integrity checker tool (ICT) to detect potential attempts of malware persistence across factory resets and system upgrades and other tactics, techniques, and procedures (TTPs) observed in the wild. We also released a remediation and hardening guide |
Malware Tool Vulnerability Threat Studies Mobile Cloud | Guam | ★★★ |
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2024-03-26 22:00:00 | Tendances les jours zéro exploités dans le monde en 2023 Trends on Zero-Days Exploited In-the-Wild in 2023 (lien direct) |
Written by: Maddie Stone, Jared Semrau, James Sadowski
Combined data from Google\'s Threat Analysis Group (TAG) and Mandiant shows 97 zero-day vulnerabilities were exploited in 2023; a big increase over the 62 zero-day vulnerabilities identified in 2022, but still less than 2021\'s peak of 106 zero-days. This finding comes from the first-ever joint zero-day report by TAG and Mandiant. The report highlights 2023 zero-day trends, with focus on two main categories of vulnerabilities. The first is end user platforms and products such as mobile devices, operating systems, browsers, and other applications. The second is enterprise-focused technologies such as security software and appliances. Key zero-day findings from the report include: Vendors\' security investments are working, making certain attacks harder. Attacks increasingly target third-party components, affecting multiple products. Enterprise targeting is rising, with more focus on security software and appliances. Commercial surveillance vendors lead browser and mobile device exploits. People\'s Republic of China (PRC) remains the top state-backed exploiter of zero-days. Financially-motivated attacks proportionally decreased. Threat actors are increasingly leveraging zero-days, often for the purposes of evasion and persistence, and we don\'t expect this activity to decrease anytime soon. Progress is being made on all fronts, but zero-day vulnerabilities remain a major threat. A Look Back - 2023 Zero-Day Activity at a Glance Barracuda ESG: CVE-2023-2868 Barracuda disclosed in May 2023 that a zero-day vulnerability (CVE-2023-2868) in their Email Security Gateway (ESG) had been actively exploited since as early as October 2022. Mandiant investigated and determined that UNC4841, a suspected Chinese cyber espionage actor, was conducting attacks across multiple regions and sectors as part of an espionage campaign in support of the PRC. Mandiant released a blog post with findings from the initial investigation, a follow-up post with more details as the investigation continued |
Vulnerability Threat Mobile Cloud Technical | ★★ | |
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2024-03-06 17:30:00 | Placer dans Dalvik: un aperçu des fichiers dex Delving into Dalvik: A Look Into DEX Files (lien direct) |
Lors de l'analyse d'un échantillon de Troie bancaire ciblant les smartphones Android, Mandiant a identifié l'utilisation répétée d'un mécanisme d'obscurcation de chaîne tout au long du code d'application.Pour analyser et comprendre pleinement la fonctionnalité de l'application \\, une possibilité est de décoder manuellement les chaînes dans chaque méthode obscurcie rencontrée, qui peut être un processus long et répétitif. & Nbsp; Une autre possibilité consiste à utiliser des outils payants tels que & nbsp; jeb décompulier qui permettent une identification et un correctif rapides du code dans les applications Android, mais nous avons constaté que la possibilité de faire de même avec la statique gratuite
During the analysis of a banking trojan sample targeting Android smartphones, Mandiant identified the repeated use of a string obfuscation mechanism throughout the application code. To fully analyze and understand the application\'s functionality, one possibility is to manually decode the strings in each obfuscated method encountered, which can be a time-consuming and repetitive process. Another possibility is to use paid tools such as JEB decompiler that allow quick identification and patching of code in Android applications, but we found that the ability to do the same with free static |
Tool Patching Mobile | ★★ |
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